Mortar and concrete mixer.



F. E. KING.

MORTAR AND CONCRETE MIXER. I AYPLIOATION FILED MAY 13, 1910.

988,788. Pa en ed Apr. 4, 1911.

'2 BHEETS-SHIIET 1.

\ Emma 8 5m FRED E. KING, OF HANCOCK, MICHIGAN.

MORTAR AND CONCRETE MiXER.

assess.

Specification of Letters Patent,

Patented Apr; 4, 1911.

Application filed May 13, .1910. Serial No. 561,146.

The invention relates to an improvement in mixing machines, designedprimarily for use as a concrete and mortar mixer and constructed topermit the introduction therein ofth'e difi'erent materials in their proer proportions and to thoroughly and e cotively mix the same into ahomogeneous mass.

The main object of the present invention is the provision of mixerincluding a material'tank or receptacl'e in jwhich are mounted foroperation a series of mixing elements, as shovels or the like the tankbeing arranged to permit 1ts convenient movement to .an inclinedposition and the mixing devices being constructed to continue the mixingoperation in any and all positions of the tank, whereby an efi'ectivedischarge from the tank is secured by the action of the mixing deviceswhen the tank is in dumping position.-

The invention in its preferred details of construction will be describedin the following specification, reference being had to the accompanyingdrawings, in which 2- Figure 1 is a plan of the improved concrete mixer."Fi 2 is a vertical sectional view thereof. fig. 3 is .a similar view,partly broken away, the line of section bemg at right angles to that ofFig. 2 and the tank bein shown in dumping position in dotted out me.Fig. 4 is a perspective detail of the connection between the shovel andcarrier.

Referring particularly to the drawings, the mortar and concrete mixer ofthe present invention, in its preferred details of construction,includes a tank 1 preferably of metal and comprising a bottom 2 and anan nular or cylindrical side Wall 3, the latter 'refe'rably extendingsome distance below the bottom, as at 4, for a purpose which will amortar or concrete.

presently appear. centrally formed with an opening 5 and secured uponthe bottom and projecting thereabove is a guide cylinder 6; 'Thec'ylinder 6 has a diameter exceeding that of the openin 5 and, beingarranged concentric therewith,- provides a flange 7 at the bottom of thecylinder and 1 within the same, the upper edge of the cylinder beingformed, or otherwise provided, with a similar interned flange 8, asshown in Fig. 2.

The mixer is preferably, though not necessarily, supported upon awheeled frame 9 from the longitudinal bars of which extend triangularsupporting frames 10. The upper cross bars 11 of the supporting frames10 are provided with bearings 12 to receive the inner ends of shafts 13and 1'4, the former of which constitutes an operating shaft and thelatter an idler shaft. The inner or proximate ends of the shafts 13 and14 are provided with beveled 16 respectively and the outer end of theoperating shaft 18 is provided with the usual drive pulley 17 to beoperated from any suitable source of power. Secured to the bottom of thetank and abutting the projection 4 of the side wall is a U-sha'pedmetallic reinforce 18, from which, at diametrically opposite points,depend guide bearings 19 to receive the respective ends of the shafts 13and 14. Secured to the bottom of the tank on lines equidistant from thecenter are spaced parallel hangers 20, and the respective shafts 13 and14 are provided immediately adjacent their cars 15 and 16 with boxes 21depending rom the hangers 20.

Arranged within the cylinder 6 and extending above and below the same iswhat 1 term a drive member 22, said member being preferably ofsleeve-like construction pro- 'vided with an upper and lower series ofradiating arms 23 and 24 terminally secured to circular guide strips 25bearing against the inner surface of the wall of the cylinder 6 andagainst the respective flanges 7 and 8. By this means the drive memberis sup- The tank. bottom 2 is gears 15 and a ported and guided in place,as will be obedge of the opposin clamp. By this means v 3 of the tank.

to a sleeve carried by the shaft 29 by a series of radiating arms 27,the teeth of which rack engage the bevel gears 15 and 16, whereby motionis imparted from the operating shaft to the drive member. The upper endof the drive member beyond the upper end of the cylinder 6 is providedwith a disk head 28, and within the drive member is secured a shaft 29which extends above the disk head. Secured upon the disk head atdiametrically opposite points are staplelike clamps 30 and 31, whichclamps are designed to receive and secure the shovel care riers. Thesecarriers are of duplicate construction and preferably comprise metallicrods 32 preferably of angular shape in cross section, their innerterminals, at 33, being bent at an angle to the main length of the rodso'that, they may be passed through one of the clamps, past shaft '29and past the the carriers are-hel in fixed relation to the drive memberand operated thereby, all strain on the carriers incident to the mixingaction of the shovels tending to force said members into contact withthe shaft 29 andopposing staple clamp so as to prevent independentmovement of the carriers, all as will be clearly apparent from Fig. 1 ofthe drawings.

That portion of the carrier projecting beyond the head of the drivemember extends substantially radially of said head, and terminates atits outer end in slightly spaced relation from the inner surface of thewall On this portion of the carrier'there is removably secured a numberof mixing devices, which may be termed. shovels. These mixing devicesare secured to the carrier to permit their adjustment, as Will appear,and for the purpose of so secur- 'ing them I provide a collar 34 foreach of the shovel members to be secured to the can rier, which collaris interiorly shaped to correspond to the sectional shape of the carrierand provided with a set screw 35 whereby it may be fixed with relationto the carrier. Pivotally mounted on the relatively forward wall of thecollar isfa bearing member 36, formed with a central bore to receive astem 37 of a shovel or other mixing element 38. A set screw 39 securesthe stem within the bearing to arrange the operative endof the shovelimmediately adjacent-the npper surface of the bottom of the tank. An arm4Q extends rearwardly from each bearing member, and said arms areconnected at their rear ends by a bar 41, whereby all of thebearing-members are connected for simultaneous adjustment. A handle 42,

preferably having the usual dog and ratchet holding means 43, isconnected to the bar 41. to permit the longitudinal movement oradjustment of the shovels to their path of movement at the will of theoperator.

as described, the various materials are introduced in the desiredproportions into the tank and, upon the application of power,-

theshovels, adjusted at the desired angular relation to their path ofmovement, are caused to travel within the tank thoroughly mixing thecontents. When the proper mixture is had the tank may be manually dumpedby moving it into an inclined position illustrated in Fig. 3. In thisoperation the tank travels on the drive gears, so that the mixingshovels within the tank continue to operate, thus affording a quickdelivery of the contents of the point of discharge, and a cleaningaction which loosens all of the material which would in the ordinarytype of mixer adhere to the sides and bottom of the tank.

Having thus described the invention, what is claimed as new, is I 1. Amixer including a frame, a tank mounted for swinging movement on theframe, shaft-s forming connection between the tank and frame, gearscarried by said shaft, means for operating one of the shafts, a drivemember mounted for movement with relation to the' tank, a gear securedto the drive member and cooperating' with the afore-mentioned gears,oppositely projecting carriers extending from the drive member, a seriesof shovels independently supported oneach carrier, guide rollers mountedon the respective shafts, and tracks secured on the tank to cooperatewith said rollers.

2. A mixer includinga frame, a tank mounted for swinging movement on theframe, shafts forming connection between the tank and frame, gearscarried by said shaft, means for operating one of the shafts, a drivemember mounted for movement with relation to the tank, a gear secured tothe drive member and cooperating with the gears, a series of shovelsindependently supported on each carrier, guide rollers mounted on therespective shafts, and means for simultaneouslyad-justingthshhvelsbheach' carrier. 3. A- mixer including a tank mounted formovement into a position for dumping, shafts'forming a connectionbetween the tank and frame, gears carried by {said sha drive membermounted for movement with relation to the tank, a gear secured to thedrive member and cooperating. with the sitely projecting carriersextending from the drive member, a series of shovels independentlysupported on each carrier, and means for simultaneously adjusting theshovels 0nench carrier.

In testimony whereof I afiix my signature in presence of two witnesses.

FRED E. KING.

Witnesses W. F. I'IENDRIOKSEN, WILLIAM F. WEALTON.

